Custom range hood system and method

ABSTRACT

Embodiments of the invention provide a range hood system including a housing, a ventilation system including an inlet and a fan, an illumination source, and a user interface coupled with a control system. In some embodiments, a fan speed can be varied, and in some further embodiments, the range hood system can include a filter change indicator and fan delay-off feature. In some other embodiments, the illumination intensity can be varied to provide variable illumination intensity to the range top surface. Some embodiments can include a clock, a timer coupled to an audible alarm, and a fan delay-off time coupled to a user interface. In some other embodiments, a heat sensor can be coupled to a component of a range hood system, and a heat sentry mode can display a status on a user interface, and can operate a fan if the temperature exceeds a preset limit.

BACKGROUND

Conventional range hoods generally provide illumination to a range top surface, and remove steam, gases and odors directly from the cooking area above the range top and adjacent areas. Conventional range hoods usually comprise a housing enclosing an extraction fan and an illumination system, and can have control panels mounted to a front face for access by the user. The controls are typically of an analog design, often employing simple mechanical switches. The functional status or setting of various components is often not presented to the user, or it may be communicated through a simple ‘on’ or ‘off’ indicator lamp. Furthermore, options for the user to customize operational functions and the user interface are absent, or very limited.

SUMMARY

Some embodiments of the invention provide an improved range hood with improved user interfaces and controls. Some embodiments provide user interfaces with the ability to control multiple functions. Some embodiments of the invention comprise a range hood system that can include a housing, an illumination source and at least one control system. In some embodiments, the invention can include a range hood system with a fan mounted within the housing, a louver system coupled to the housing and the fan, and a ducting system coupled to the housing, the louver system and the fan. Some embodiments can include a control system for controlling a fan to remove steam, gases and odors via the louver and ducting system at a predetermined rate. Some other embodiments can include a ducting system that recirculates filtered air instead of venting outside a structure.

In some other embodiments of the invention, the range hood can include a filter coupled to the fan, ducting system, and louver system within the housing. In some further embodiments the range hood can include a filter change indicator coupled to a user interface.

In some embodiments, a fan speed can be varied to provide a fan with a variable extraction rate. Steam and other offending gases and odors can be extracted directly from the cooking area above the range top, and areas immediate adjacent to the range top, and passed through a filter and ducting system at a rate adjustable by the user.

Some embodiments can include a time delay feature coupled to control system and user interface to enable a user to program a fan operation time prior to the control system deactivating the fan.

In some embodiments of the invention, a range hood can be provided with at least one illumination source that provides an improved lighting and visual environment to a range top surface. The illumination source is coupled to, and integrated with the housing, and coupled to a control system and a user interface. In some embodiments, the illumination intensity can be varied to provide variable lighting intensity to the range top surface.

Some embodiments can include a clock display coupled to a user interface and a control system to provide a user with a time of day indication. Some further embodiments can include a timer display function integrated with the clock display coupled to user interface and control system to provide a user with a timing function. In some other embodiments, the timer can be coupled to an audible alarm system coupled to a user interface and a control system.

In some other embodiments of the invention, a heat sentry system can be coupled to the range hood to monitor temperature of the control electronics of the range hood. The heat sentry system can include a heat sensor coupled to the control electronics, the control system, and the user interface. In some embodiments, the heat sensor can monitor the temperature of the control electronics, and the control system can automatically activate a fan to a maximum or desired setting.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 2 a is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 2 b is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 2 c is a front perspective view of a custom range hood according to one embodiment of the invention.

FIG. 2 d is an alternate perspective view of a custom range hood according to one embodiment of the invention.

FIG. 2 e is an alternate perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 a is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 b is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 c is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 d is an alternate perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 e is an alternate perspective view of a custom range hood according to one embodiment of the invention.

FIG. 3 f is an alternate perspective view of a custom range hood according to one embodiment of the invention.

FIG. 4 a is a perspective view of a custom range hood according to one embodiment of the invention.

FIG. 4 b is a perspective view of a custom range hood according to one embodiment of the invention.

DETAILED DESCRIPTION

Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.

The following discussion is presented to enable a person skilled in the art to make and use embodiments of the invention. Various modifications to the illustrated embodiments will be readily apparent to those skilled in the art, and the generic principles herein can be applied to other embodiments and applications without departing from embodiments of the invention. Thus, embodiments of the invention are not intended to be limited to embodiments shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. The following detailed description is to be read with reference to the figures, in which like elements in different figures have like reference numerals. The figures, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of embodiments of the invention. Skilled artisans will recognize the examples provided herein have many useful alternatives that fall within the scope of embodiments of the invention.

As shown and described in the following description in FIGS. 1, 2 a-2 e, 3 a-3 f, 4 a-4 b, some embodiments of the invention can be installed adjacent to a cooking area (e.g., in a kitchen). For example, in some embodiments, the range hood systems as described below and illustrated in FIGS. 1, 2 a-2 e, 3 a-3 f, 4 a-4 b, can be installed immediately adjacent to, or above a cook top or range top, or within an alternative environment. Accordingly, although the description herein includes details of the range hood system installed in a kitchen area as described, this description is not intended to limit the scope of this disclosure to kitchen or cooking-related applications. Moreover, as described in further detail below, the range hood systems shown in FIGS. 1, 2 a-2 e, 3 a-3 f, and 4 a-4 b can comprise a plurality of different configurations.

In some embodiments, in order to exhaust at least a portion of a cooking effluent and other fluids produced during a cooking episode, a ventilation assembly can be activated to remove steam, and other gases and odors from the cooking area above the range top and areas immediately adjacent to the range top. For example, in some embodiments of the invention, the range hood systems shown in FIGS. 1, 2 a-2 e, 3 a-3 f, and 4 a-4 b can include a ventilation system comprising an fan, and filter system coupled within a housing that includes at least one inlet. Some other embodiments may include a louver system, coupled to the fan and ducting system which is coupled to the housing. At least a portion of the fluid can be moved away from the range top and immediately adjacent areas and pulled through the ventilation system via one or more fluid inlets. Moreover, in some embodiments, the ventilation system can include one or more filters 41 positioned substantially in the ducting system, coupled to the fan. In some embodiments, the ventilation system includes at least one duct (i.e. at least one fluid outlet) coupled to a location external to range hood that can direct the exhausted effluent to a desired location (e.g., out of the structure, out of the local environment, or back out of the range hood following filtration to remove odors and/or particulates, etc.).

In some embodiments, the range hood systems shown in FIGS. 1, 2 a-2 e, 3 a-3 f, and 4 a-4 b can comprise a housing 13 including a first surface 15 including a user interface 11. Some embodiments of the invention include at least one user interface 11 comprising one or more switches, buttons or other control features located substantially on the first surface 15. In some embodiments, the switches or buttons can comprise the ability to control a ventilation assembly (i.e., control activation and deactivation and/or multiple operational speeds of the ventilation assembly), or an illumination source, and can also provide feedback to the user. For example, in some embodiments where the ventilation system comprises a filter 41, the user interface 11 can comprise one or more indicators that can provide an indication of whether the filter 41 needs to be cleaned and/or replaced. Moreover, in some embodiments, the user interface 11 can also include an indicator reflecting the operation of an over-heating protection system. In some embodiments, one or more components designed to transfer user-directed actions to functional changes in the range hood system 10 can comprise rear-mounted capacitive control buttons or switches. In other embodiments, electromechanical switches, buttons, such as ‘push-buttons’, toggles, or dials can be used. In some embodiments, at least one or more switches or buttons can be actuated by a user. In some embodiments, a user can actuate at least one or more switches or buttons by applying a force to the switch or button. In some other embodiments, a user can actuate at least one or more switch or buttons by applying a force to at least some partial region of the user interface 11. In some other embodiments, a user can actuate at least one or more switch or buttons by touching at least some partial region of the user interface 11.

In some embodiments of the range hood systems shown in FIGS. 1, 2 a-2 e, 3 a-3 f, and 4 a-4 b, a user interface 11 is coupled with at least one control system for controlling and monitoring various operations of the range hood (not shown). In some embodiments, the user interface 11 is coupled with at least one monitoring system to provide information on at least one functional status of at least one component of the range hood (not shown). In some embodiments, the user interface 11 is coupled with at least one sensor (not shown) to provide information on the operational status of at least one component of the range hood system 10. For example, as shown in FIG. 1, the range hood system 10 can comprise a fan switch 44 and a light switch 46. Furthermore, in some embodiments, the range hood system 10 can comprise one or more visual indicators can be included in the user interface 11 to communicate to the user the status of one or more components of the range hood system 10 may change state. In some embodiments of the invention for example, the control system (not shown) can be coupled to an illumination source, coupled within a third surface 19 (not shown), and further coupled to a user interface 11. For example as shown in FIG. 1, the range hood can include a user interface 11. Furthermore, some other embodiments can include a device which can indicate the status of the range hood illumination source (i.e. whether or not the range hood illumination source is in an on or off state). For example as shown in FIG. 1, the range hood system 10 can include a user interface 11 with at least one light emitting device 18. In some embodiments, the at least one light emitting device 18 can comprise a light-bulb or incandescent lamp, or a neon-bulb. In other embodiments, the at least one light emitting device 18 can be one or more light-emitting diodes. In other embodiments, the at least one light emitting device 18 can comprise some other visible light emitting device that can be capable of providing a visual signal to a user of the functional status of one or more components of the range hood system 10. For example as shown in FIG. 1, the display state 12 can comprise an light emitting device 18 in an off-state 18 a, (i.e. no power is being supplied to the light emitting device 18 and the device is not emitting light), or as shown in display state 20 comprising a light emitting device in an on-state 18 b (i.e. power is being supplied to the light emitting device 18 and the device is emitting light). In some embodiments, the light emitting device 18 may emit light with an identical, or substantially similar luminosity. In some other embodiments, the light emitting device 18 may emit light at a luminosity, or intermittently (i.e. the light emitting device 18 may cycle from an on to an off state. For example, as shown in FIG. 1, the display state 30 can comprise a light emitting device 35 that may emit light at intermittently to present a ‘blinking’ effect to a user. In some embodiments, the light emitting device 35 may indicate to the user the need to change one or more filters 41 in the range hood system 10. In some embodiments, when the total fan operation time reaches 30 hours, the filter change indicator (e.g. shown as a blinking light emitting device 35 FIG. 1), will cycle on and off every two seconds. In some embodiments, the light emitting device 35 will cycle on and off every two seconds regardless of the operating status of the fan. For example, in some embodiments, if a fan is active and the light emitting device 18 is illuminated, but the fan operation time passes 30 hours, the light emitting device 18 (shown as light emitting device 35) will cycle on and off every two seconds to warn the user that the fan operation time has reached 30 hours, and therefore the recommended procedure is to renew the filter 41. In some embodiments, the filter change indicator light emitting device 35 can be reset within the control system (not shown). For example, when the fan is off, and the filter change indicator is activated (i.e. light emitting device 35 is blinking), and the fan switch or button 44 is pressed and held for three seconds, the blinking filter change indicator light emitting device 35 will turn off, and a 30 hour filter change timer within the control system will be reset. In some other embodiments, for example when the fan is on, and the filter change indicator is activated (i.e. light emitting device 35 is blinking), and the fan switch or button 44 is pressed and held for three seconds, the light emitting device 18 will stay illuminated (i.e. the blinking will cease), and the 30 hour filter change timer within the control system will be reset. In this embodiment, the fan speed will not be changed.

In some further embodiments of the invention, the user interface 11 can comprise one or more icons associated with one or more switches or other user controls. For example, as shown in FIG. 1, the range hood system 10 can comprise a fan switch icon 14, and a light switch icon 16. In some embodiments, one or more of the switches or buttons can also comprise an icon. For example, as shown in the range hood system 10 in FIG. 1, the fan switch 44 can comprise an icon that is substantially the same or similar to the fan switch icon 14, and the light switch 46 can comprise an icon that is substantially the same or similar to the light switch icon 16. In some embodiments, the one or more icons associated with the one or more switches or other user controls on the user interface 11 may be substantially similar or the same. In some other embodiments, the one or more icons associated with the one or more switches or other user controls on the user interface 11 may be substantially different. In some embodiments, the fan switch icon 14, and a light switch icon 16 can comprise an icon that is printed on the surface of the range hood system 10. In some other embodiments, one or more icons on the fan switch 44 or the light switch 46 can comprise an icon that is printed on the surface of the range hood system 10. As shown in FIG. 1, in some embodiments, the fan switch icon 14, and a light switch icon 16 may reside on the first surface 15 of the housing 13, and the fan switch 44 and the light switch 46 may reside on a third surface 19. In other embodiments the fan switch 44 and the light switch 46 may reside on the first surface 15.

In some embodiments, the range hood system 10 includes at least one ventilation outlet 40 connected to at least one duct within the range hood system 10 (not shown). In some embodiments, the range hood system 10 can include a fan (not shown) mounted within a housing of the range hood system 10, a louver system coupled to the housing 13 and the fan (not shown), and a ducting system coupled to the housing 13 (not shown), the louver system and the fan (not shown). Some embodiments can include a system for controlling a fan motor to remove steam, gases and odors via the ducting at a predetermined rate (not shown). In some embodiments, an aperture 32 can be included. As shown in FIG. 1, in some embodiments, a plurality of apertures 32 can be included. In some embodiments, the aperture 32 can provide an aesthetic appearance to the range hood system 10. In some other embodiments, the aperture 32 can provide a fluid connection between the exterior of the range hood system 10 and at least one internal component of the range hood system 10. In some embodiments, the aperture 32 may fluidly connect the exterior of the range hood system 10 and an internal ducting (not shown), and can be configured and arranged with the ducting and an internal filter (not shown) to provide a fluid relief pathway. In some other embodiments, the aperture 32 may fluidly connect the exterior of the range hood system 10 and at least one internal component of the range hood system 10 to allow air cooling of one or more components. As noted earlier, in some embodiments, the range hood system 10 can comprise one or more illumination sources (not shown). In some embodiments, the one or more illumination sources (not shown) can be configured and arranged to provide lighting to a range top surface. In some embodiments, the one or more illumination sources can be configured and arranged to provide lighting to an area immediately adjacent to the range top surface.

In some other embodiments, one or more visible light emitting components can be substantially integrated with the one or more buttons or switches. For example, as shown FIGS. 2 a, 2 b, 2 c, 2 d, and 2 e the range hood systems 200, 230, and 240 can comprise a user interface 11 positioned on a first surface 15 of a housing 13. In some embodiments, the user interface 11 includes a plurality of buttons or switches configured and arranged to emit visible light. In some embodiments, a plurality of buttons or switches can incorporate a visible light emitting device for communicating the status of at least one component of the range hood. In some embodiments, at least a partial region of the button or switch is configured and arranged to emit light. In other embodiments, light is emitting from a region that surrounds at least a partial region of the button or switch. In some other embodiments, button or switch can include a light emitting component that can reside substantially behind at least a partial region of the button or switch. In some embodiments, the light emitting component can comprise a light emitting diode. In other embodiments, the light emitting component can comprise a light-bulb or incandescent lamp, or a neon-bulb. In some other embodiments, the light emitting device can comprise an electroluminescent source. In some other embodiments, the at least one light emitting component can comprise some other visible light emitting device that can be capable of providing a visual signal to a user of the functional condition or status of one or more components of the range hood system 200, 230 or 240.

For example, as shown in FIG. 2 a in display state 222, when the fan or illumination source is not operational, the fan switch indicator is is not illuminated 223 a and the light switch indicator is not illuminated 225 a. Conversely when the fan is operational, the fan switch indicator is illuminated 223 b, as shown in display state 224. In some embodiments, when the fan is not operational, but the illumination source 205 is operational, the fan switch indicator is not illuminated 223 a, and the light switch indicator is illuminated 225 b, as shown in display state 226. In some other embodiments, the fan switch indicator 223 b may emit light intermittently to present a ‘blinking’ effect to a user (shown in display state 228 where the fan switch indicator 223 b is illuminated intermittently). In some embodiments, the ‘blinking’ effect to a user may indicate to the user the need to change one or more filters 41 in the range hood system 200. In some further embodiments, for example as illustrated in FIG. 2 a. 228, when the fan has been operated for 30 hours, fan switch indicator 223 b is illuminated intermittently (e.g. 1 cycle every 2-seconds). This switch indicator will blink if the fan is in the on or off state. If the fan is off, and the filter change indication is activated, the indicator will blink at low luminosity. If the fan is on, and the filter change indication is activated, the fan switch indicator 223 b will blink with a luminosity related to the fan speed (i.e. low luminosity at low fan speed, and high low luminosity at high speed). When the fan is off, and the filter change indicator is activated (fan switch indicator 223 b is blinking), and the fan switch indicator 223 b is pressed and held for three seconds, the blinking will stop and illumination from the fan switch indicator 223 b will turn off (reverting to fan switch indicator 223 a as represented in display state 222), and the 30 hour timer will be reset. When the fan is on, and the filter change indicator is activated (fan switch indicator 223 b is blinking), and the fan switch indicator 223 b is pressed and held for three seconds, the blinking will stop and the fan switch indicator 223 b will stay illuminated, (a luminosity related to the fan speed). The 30 hour timer will be reset, and the fan speed will not be affected.

In some embodiments, a fan may be controlled to more than one speed and the illumination source 205 may be controlled to produce illumination at more than one illumination setting. Steam, and other offending gases and odors can be extracted directly from the cooking area above the range top and areas immediate adjacent to the range top and passed through a filter 41 and ducting system at a rate adjustable by the user. For example, a user may press the fan switch indicator 223 a once, and the fan switch indicator 223 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the fan switch again, a fan switch indicator 223 b may illuminate to a bright level, as shown in display state 224. In some other embodiments for example, a user may press the light switch indicator 225 a once, and the light switch indicator 225 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the light switch again, the light switch indicator 225 b may illuminate to a bright level, as shown in display state 226. In some other embodiments, the range hood can have more than two fan speeds, and more than two illumination brightness levels.

In some embodiments, the range hood system 200 includes at least one ventilation outlet 40 connected to at least one duct within the range hood system 200 (not shown). In some embodiments, the range hood system 200 can include a fan (not shown) mounted within a housing of the range hood system 200, a louver system coupled to the housing and the fan (not shown), and a ducting system coupled to the housing (not shown), the louver system and the fan (not shown). Some embodiments can include a system for controlling a fan to remove steam, gases and odors via the ducting at a predetermined rate (not shown). In some embodiments, an aperture 208 can be coupled to at least one face of the housing 13. For example, as shown in FIG. 2 a, an aperture 208 can be coupled within the second surface 17. In other embodiments, one or more apertures can be coupled with a first surface 15, or a third surface 19. In some embodiments, a plurality of apertures 208 can be included. In some embodiments, the aperture 208 can provide an aesthetic appearance to the range hood system 200. In some other embodiments, the aperture 208 can provide a fluid connection between the exterior of the range hood system 200 and at least one internal component of the range hood system 200. In some embodiments, the aperture 208 may fluidly connect the exterior of the range hood system 200 and an internal ducting (not shown), and can be configured and arranged with the ducting and an internal filter (shown as 41 in the alternate perspective view of range hood system 200 in FIG. 2 e and the alternate perspective view of range hood system 240 in FIG. 2 e) to provide a fluid relief pathway. In some other embodiments, the aperture 208 may fluidly connect the exterior of the range hood system 200 and at least one internal component of the range hood system 200 to allow air cooling of one or more components.

As noted earlier, in some embodiments, the range hood system 200 can comprise one or more illumination sources 205 coupled with a third surface 19 of a housing 13. In some embodiments, the one or more illumination sources 205 can be configured and arranged to provide lighting to a range top surface. In some embodiments, the one or more illumination sources 205 can be configured and arranged to provide lighting to an area immediately adjacent to the range top surface. In some embodiments, the illumination source 205 is coupled to, and integrated with the housing on a third surface 19 of the range hood system 200, and coupled to a control system (not shown), and a user interface 11. In some embodiments, one or more illumination sources 205 provide fixed illumination intensity to the range top surface. In some other embodiments, the illumination intensity of the illumination sources 205 can be varied to provide variable illumination intensity to the range top surface. In some embodiments, the illumination source 205 can comprise one or more incandescent lamps. In other embodiments, the illumination source 205 can comprise at least one fluorescent lighting source, or one or more light-emitting diodes. In some embodiments, other lighting sources can be used.

As mentioned earlier, the range hood can comprise a plurality of different configurations. For example as shown in FIG. 2 b, in some other embodiments of the invention, the range hood system 230 can comprise an alternative user interface 11 coupled with a second surface 17 of a housing 13. As illustrated in FIG. 2 b, in some embodiments of the invention, the range hood system 230 can include a user interface 11 that comprises a dark colored polycarbonate overlay fascia 31 to provide an improved contrast display. In some embodiments, the user interface 11 can be coupled with a transparent or semi-transparent overlay fascia 31 mounted within the housing 13 coupled to the user interface 11. In some other embodiments, the overlay fascia 31 may be substantially mounted within a bezel coupled with the housing 13 and coupled with the user interface 11. In some embodiments, the overlay fascia may be colored, preferably to provide improved visual characteristics, including, but not limited to brightness, and contrast in well-lit or darkened rooms, aesthetic appearance, etc. In some embodiments, user interface 11 may emit a blue or blue-green light. In other embodiments, the display can emit a yellow, orange or substantially red light. It will be recognized that this particular embodiment need not be limited to the use of the colors described, and in fact any combination of user interface color can be used to provide the improved user interface. It will also be recognized that the color emitted from the user interface can be changed by altering the light emission characteristics of the illumination source, or the light transmission characteristics of the overlay fascia 31, or both. As shown in FIG. 2 b, in some embodiments, the user interface 11 comprises a rectangular display. In other embodiments, the user interface 11 can be square, or at least partially circular or comprise rounded corners. In some embodiments, the overlay fascia 31 can be substantially rectangular or square. In other embodiments, the overlay fascia 31 can be at least partially circular or comprise rounded corners. In some other embodiments, one or more visible light emitting components can be substantially integrated with the one or more buttons or switches. As discussed earlier, in some embodiments for example, as shown FIG. 2 b, the range hood systems 230 can comprise a user interface 11 that includes a plurality of buttons or switches that incorporate a visible light emitting device for communicating the status of at least one component of the range hood. In some embodiments, at least a partial region of the button or switch includes a light emitting device. In other embodiments, the light emitting component immediate surrounds at least a partial region of the button or switch. In some other embodiments, the light emitting component can reside substantially behind at least a partial region of the button or switch. In some embodiments, the light emitting component can comprise a light emitting diode. In other embodiments, the light emitting component can comprise a light-bulb or incandescent lamp, or a neon-bulb. In some other embodiments, the light emitting device can comprise an electroluminescent source. In some other embodiments, the at least one light emitting component can comprise some other visible light emitting device that can be capable of providing a visual signal to a user of the functional condition or status of one or more components of the range hood system 230.

For example, as shown in FIG. 2 b in display state 232, when the fan or illumination source is not operational, the fan switch indicator is not illuminated 233 a and the light switch indicator is not illuminated 235 a. Conversely when the fan is operational, the fan switch indicator is illuminated 233 b, as shown in display state 234. In some embodiments, when the fan is not operational but the illumination source 205 is operational, the fan switch indicator is not illuminated 233 a, and the light switch indicator is illuminated 235 b, as shown in display state 236. In some other embodiments, the fan switch indicator 233 b may emit light intermittently to present a ‘blinking’ effect to a user (shown in display state 238). In some embodiments, the ‘blinking’ effect to a user may indicate to the user the need to change one or more filters 41 in the range hood system 230. As discussed previously, the range hood system 10 can comprise a plurality of different configurations. For example, as shown in FIG. 2 c showing a range hood system 240, in display state 242, when the fan or illumination source is not operational, the fan switch indicator is not illuminated 243 a and the light switch indicator is not illuminated 245 a. Conversely when the fan is operational, the fan switch indicator is illuminated 243 b, as shown in display state 244. In some embodiments, when the fan is not operational but the illumination source 205 is operational, the fan switch indicator is not illuminated 243 a, and the light switch indicator is illuminated 245 b, as shown in display state 246. In some other embodiments, the fan switch indicator 2243 b may emit light intermittently to present a ‘blinking’ effect to a user (shown in display state 248). In some embodiments, the ‘blinking’ effect to a user may indicate to the user the need to change one or more filters 41 in the range hood system 240. In some embodiments, the fan may be controlled to more than one speed and the illumination source may be controlled to produce illumination at more than one illumination setting. For example, a user may press the fan switch indicator 243 a once, and the fan switch indicator 243 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the fan switch again, fan switch indicator 243 b may illuminate to a high level, as shown in display state 244. In some other embodiments for example, a user may press the light switch indicator 245 a once, and the light switch indicator 245 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the light switch again, the light switch indicator 245 b may illuminate to a bright level, as shown in display state 246. In some other embodiments, the fan switch indicator 243 b may emit light intermittently to present a ‘blinking’ effect to a user (shown in display state 248). In some embodiments, the ‘blinking’ effect to a user may indicate to the user the need to change one or more filters 41 in the range hood system 240.

As shown in FIG. 2 c, in some embodiments, the range hood system 240 includes at least one ventilation outlet 40 connected to at least one duct within the range hood system 240 (not shown). In some embodiments, the range hood system 240 can include a fan (not shown) mounted within a housing of the range hood system 240, a louver system coupled to the housing and the fan (not shown), and a ducting system coupled to the housing (not shown), the louver system and the fan (not shown). Some embodiments can include a system for controlling a fan motor to remove steam, gases and odors via the ducting at a predetermined rate (not shown). In some embodiments, the housing of the range hood 240 can comprise a plurality of apertures 249. For example, as shown in FIG. 2 c, a plurality of aperture 249 can be coupled within the second surface 17. In other embodiments, one or more apertures can be coupled with a first surface 15, or a third surface 19. In some embodiments, the apertures 249 can provide an aesthetic appearance to the range hood system 240. In some other embodiments, the apertures 249 can provide a fluid connection between the exterior of the range hood system 240 and at least one internal component of the range hood system 240. In some embodiments, the apertures 249 may fluidly connect the exterior of the range hood system 240 and an internal ducting (not shown), and can be configured and arranged with the ducting and an internal filter (shown as 41 in FIG. 2 d) to provide a fluid relief pathway. In some other embodiments, the aperture 249 may fluidly connect the exterior of the range hood system 240 and at least one internal component of the range hood system 240 to allow air cooling of one or more components.

In some embodiments of the invention, as shown in FIG. 2 c, a display state 242, when the fan or illumination source is not operational, the fan switch indicator is not illuminated 243 a and the light switch indicator is not illuminated 245 a. Conversely when the fan is operational, the fan switch indicator is illuminated 243 b, as shown in display state 244. In some embodiments, when the fan is not operational, but the illumination source 205 is operational, the fan switch indicator is not illuminated 243 a, and the light switch indicator is illuminated 245 b, as shown in display state 246. In some other embodiments, the fan switch indicator 243 b may emit light intermittently to present a ‘blinking’ effect to a user (shown in display state 248 where fan switch indicator 243 b is illuminated intermittently). In some embodiments, the ‘blinking’ effect to a user may indicate to the user the need to change one or more filters 41 in the range hood system 240.

In some embodiments, the fan may be controlled to more than one speed and the illumination source may be controlled to produce illumination at more than one illumination setting. Steam, and other offending gases and odors can be extracted directly from the cooking area above the range top and areas immediate adjacent to the range top and passed through a filter and ducting system at a rate adjustable by the user. For example, a user may press the fan switch indicator 243 a once, and the fan switch indicator 243 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the fan switch again, a fan switch indicator 243 b may illuminate to a bright level, as shown in display state 244. In some other embodiments for example, a user may press the light switch indicator 245 a once, and the light switch indicator 245 a may illuminate to a dim level (not shown). In some embodiments, when the user presses the light switch again, the light switch indicator 245 b may illuminate to a bright level, as shown in display state 246. In some other embodiments, the range hood can have more than two fan speeds, and more than two illumination brightness levels.

Some embodiments of the invention can comprise an alternative user interface 11. For example as shown in range hood system 300, an alternative user interface 11 can include a liquid-crystal display (“LCD”) 304 and a switch assembly 302 and 306 that also incorporate a switches or buttons that provide visual light communication to the user. In some embodiments, the LCD 304 features a back-lighting system that emits blue light and graphics are displayed that are generally blue in color. In other embodiments, other color combinations can be used. In some embodiments, when the range hood system 300 is not in use, the user interface 11 is not illuminated. The switch assembly 302 can include a fan switch indicator 310, and a light switch indicator 312. Furthermore, some embodiments can include a fan delay-off button indicator 317 and a filter change button indicator 318. In some embodiments, the LCD 304 can comprise at least one “bar-graph” type displays. For example, the LCD 304 can comprise a fan speed bar display 313, and a light level bar display 315. In some embodiments, the LCD 304 can also include one or more icons. For example, the LCD 304 can include a fan icon 314, adjacent to the fan speed bar display 313, and a light icon 316, adjacent to the light level bar display 315. The range hood system 300 can also include one or more apertures 308, and one or more illumination sources 305.

In some embodiments, the range hood system 300 includes at least one ventilation outlet 40 connected to at least one duct within the range hood system 300 (not shown). In some embodiments, the range hood system 300 can include a fan (not shown) mounted within a housing 13 of the range hood system 300, a louver system coupled to the housing and the fan (not shown), and a ducting system coupled to the housing (not shown), the louver system and the fan (not shown). Some embodiments can include a system for controlling a fan to remove steam, gases and odors via the ducting at a predetermined rate (not shown). In some embodiments, an aperture 308 can be included. In some embodiments, a plurality of apertures 308 can be included. For example, as shown in FIG. 3 a, an aperture 308 can be coupled within the first surface 15. In other embodiments, one or more apertures 308 can be coupled with a second surface 17, or a third surface 19. In some embodiments, a plurality of apertures 308 can be included coupled to a first surface 15, a second surface 17 and a third surface 19. In some embodiments, the aperture 308 can provide an aesthetic appearance to the range hood system 300. In some other embodiments, the aperture 308 can provide a fluid connection between the exterior of the range hood system 300 and at least one internal component of the range hood system 300. In some embodiments, the aperture 308 may fluidly connect the exterior of the range hood system 300 and an internal ducting (not shown), and can be configured and arranged with the ducting and an internal filter 41 (shown as 41 in FIG. 3 f) to provide a fluid relief pathway. In some other embodiments, the aperture 308 may fluidly connect the exterior of the range hood system 300 and at least one internal component of the range hood system 300 to allow air cooling of one or more components.

As noted earlier, in some embodiments, the range hood system 300 can comprise one or more illumination sources 305. In some embodiments, the one or more illumination sources 305 can be configured and arranged to provide lighting to a range top surface. In some embodiments, the one or more illumination sources can be configured and arranged to provide lighting to an area immediately adjacent to a range top surface. In some embodiments, the illumination source 305 is coupled to, and integrated with the housing 13 of the range hood system 300, and coupled to a control system (not shown), and a user interface 11. In some embodiments, one or more illumination sources 305 provide fixed illumination intensity to a range top surface. In some other embodiments, the illumination intensity of the illumination sources 305 can be varied to provide variable illumination intensity to a range top surface. In some embodiments, the illumination source 305 can comprise one or more incandescent lamps. In other embodiments, the illumination source 305 can comprise at least one fluorescent lighting source, or one or more light-emitting diodes. In some embodiments, other lighting sources can be used.

In some embodiments, the range hood system 300 can be configured and arranged to provide information on the operational characteristics of at least one component of the range hood system 300. For example, in some embodiments as shown in FIG. 3 a, the activation status of the fan is provided on the user interface 11, and in some embodiments can include a bar-graph type display 313, and a fan icon 314. In some other embodiments as shown in FIG. 3 a, the activation status of the illumination source 305 is provided on the user interface 11. For example, in some embodiments as shown in FIG. 3 a, the activation status of the illumination source 305 is provided on the user interface 11, and in some embodiments can include a bar-graph type light level display 315, and a light icon 316. In some further embodiments, other buttons and switches and indicators can be included in the range hood system 300. For example, user interface 11 of the range hood system 300 can include a fan delay-off button indicator 317, and a filter change button indicator 318. In some embodiments, the user interface 11 shown in FIG. 3 a can be used in alternative range hood systems 340 as shown in FIGS. 3 c and 3 d.

In some embodiments, the user interface 11 can be mounted flush with a housing 13 of the range hood system 300 and the switches or buttons and indicators (310, 312, 317 and 318) can be separate from the LCD 304. However some other embodiments can have alternative configurations. As described earlier, the range hood can comprise a plurality of different configurations. For example, as shown in FIG. 3 b, in some embodiments of the invention, the range hood 320 can comprise an alternative user interface 11 with at least one switch assembly 333, 334. In some embodiments, the user interface 11 may be coupled with a transparent or semi-transparent overlay fascia 31 mounted within a housing of the range hood system 320. In some embodiments, the overlay fascia 31 may be colored, preferably to provide improved visual characteristics, including, but not limited to color, brightness, and contrast in well-lit or darkened rooms, aesthetic appearance, etc. In this embodiment, a dark colored polycarbonate overlay fascia 31 provides an improved contrast display to the user. In some embodiments, the user interface 11 may emit a blue or blue-green light. In other embodiments, the display can emit a yellow, orange or substantially red light. It will be recognized that this particular embodiment need not be limited to the use of the colors described, and in fact any combination of user interface color can be used to provide the improved user interface 11. As described earlier, it will also be recognized that the color emitted from the user interface 11 can be changed by altering the light emission characteristics of the illumination source, or the light transmission characteristics of the overlay fascia 31, or both. As shown in FIG. 3 b, in some embodiments, the user interface 11 comprises a substantially rectangular display with rounded corners. In other embodiments, the user interface 11 can be square, or at least partially circular. In some other embodiments, one or more visible light emitting components can be substantially integrated with the one or more buttons or switches. As discussed earlier, in some embodiments for example, as shown FIG. 3 b, the range hood systems 320 can comprise a user interface 11 that includes a plurality of buttons or switches that incorporate a visible light emitting device for communicating the status of at least one component of the range hood system 320. In some embodiments, at least a partial region of a button or switch in switch assembly 333 and 334 includes a light emitting device. In other embodiments, the light emitting device immediate surrounds at least a partial region of a button or switch in the switch assembly 333 and 334. In some other embodiments, the light emitting device can reside substantially behind at least a partial region of the button or switch. In some embodiments, the light emitting component can comprise a light emitting diode. In other embodiments, the light emitting component can comprise a light-bulb or incandescent lamp, or a neon-bulb. In some other embodiments, the light emitting device can comprise an electroluminescent source. In some other embodiments, the at least one light emitting component can comprise some other visible light emitting device that can be capable of providing a visual signal to a user of the functional condition or status of one or more components of the range hood system 320.

In some embodiments, the range hood system 320 can be configured and arranged to provide information on the operational characteristics of at least one component of the range hood system 320. As shown in FIG. 3 b, the LCD 321 can display the status of a fan within a user interface display 11, and in some embodiments can include a bar-graph type display. For example, in some embodiments as shown in FIG. 3 b, the activation status of a fan is provided on the user interface 11, and in some embodiments can include a bar-graph type display 313, and a fan icon 314. In some other embodiments as shown in FIG. 3 b, the activation status of the illumination source 305 is provided on the user interface 11. For example, in some embodiments as shown in FIG. 3 b, the activation status of the illumination source 305 is presented to the user on the user interface 11, and in some embodiments can include a bar-graph type display 315, and a fan icon 316. In some further embodiments, other buttons and switches and indicators can be included in the range hood system 300. For example, the user interface 11 of the range hood system 300 can include a fan delay-off button indicator 317, and a filter change button indicator 318.

In some embodiments, when the fan (not shown), or other components such as an illumination source 305 are not operational, the user interface 11 will not be illuminated (shown as display state 322). After a user contacts one or more buttons or switches, the user interface 11 can illuminate (shown as display state 330). In some embodiments, if the user takes no further action, (i.e. the user makes no further contact of one or more buttons or switches on the user interface display within 5 seconds), the display reverts to an off display state 322.

In some embodiments, the speed of the fan can be varied in relation to the number of repeated contacts with the fan switch or button, for example as shown in FIG. 3 b in display state 324. The speed status of the fan can be displayed within the LCD 321, and in some embodiments can include a bar-graph type display 313. The bar-graph display 313 as shown in display state 324 in FIG. 3 b for example shows two bars out of a total of three bars ‘filled’ or ‘darkened’ on a bar-graph indicative of the speed of a fan. In this embodiment, following an initial contact with the user interface 11, the LCD 321 will illuminate as shown at display state 330. Following a user contacting the fan switch indicator 323 b, a first bar of a fan speed bar display 313 will become ‘filled’ or ‘darkened’ on a bar-graph indicative of the speed of the fan at the lowest speed setting, (not shown). Following a user contacting the fan switch indicator 323 b for a second time, the first bar of a fan speed bar display 313 will remain ‘filled’ or ‘darkened’, and a second, adjacent bar will become ‘filled’ or ‘darkened’ indicative of the speed of the fan at a medium speed setting, (as shown in FIG. 3 b display state 324). Following a user contacting the fan switch indicator 323 b for a third time, the first and second bar of the LCD 321 wi11 remain ‘filled’ or ‘darkened’, and a third bar or adjacent bar of the fan speed bar display 313 will become ‘filled’ or ‘darkened’ indicative of the speed of the fan at a high speed setting, (not shown). Skilled artisans will recognize the examples provided herein have many useful alternatives that fall within the scope of embodiments of the invention. For example, further fan speed settings can be accommodated by increasing the number of bars on the bar-chart, or by the use of alternative display formats intended to be representative of the magnitude of the speed of the fan.

In some embodiments, a fan delay-off feature can be used. For example, in some embodiments, if a fan is operating (at any speed setting), and the fan delay-off button indicator 317 is pressed, the fan will operate for a further 10 minutes before the fan is automatically deactivated a control system (not shown). For example, as shown in FIG. 3 b, a delay-off interface can be presented to the user (shown in display state 332). In one embodiment, if the user has activated the delay-off feature by pressing the delay off button indicator 317, the delay-off indication icon and surrounding illuminated ring will blink on for 1 second and blink off for 1 second and repeat this cycle until the end of the 10 minute delay-off period (this is represented as 327 c in display state 332). In some embodiments, after the 10 minute delay off period has ended, the fan and any fan indicators shown on the user interface 11 will turn off However the delay-off button indicator 317 will remain illuminated, and the delay-off feature will not deactivate the illumination source 305 if active. In some embodiments, if no other range-hood system 320 features are active, and the delay-off feature has passed the end of the 10 minute delay-off period, the control system will turn-off after an additional 5 minutes (i.e. the user interface 11 will turn off as represented in display state 312). In some embodiments, the delay-off feature can be interrupted and halted at any time in the 10 minute delay-off period by pressing the delay-off button indicator 317 switch or button again.

Some embodiments can include an illumination status display within the user interface 11. As shown in FIG. 3 b and the LCD 321, in some embodiments, the status of the illumination source 305 can be displayed within a user interface 11, for example the luminosity setting can be display on a bar-graph type display. In some embodiments, the luminosity of the illumination source 305 can be varied in relation to the number of repeated contacts with the light switch indicator 312 switch or button. Furthermore, as shown in FIG. 3 b, the luminosity setting of the illumination source 305 can be displayed within a user interface 11, and in some embodiments can include a bar-graph type display, shown as the light level bar display 315. The display state 326 in FIG. 3 b for example shows one bar out of a total of three bars ‘filled’ or ‘darkened’ on the light level bar display 315 indicative of the intensity of the illumination source 305. In this embodiment, following an initial contact with the user interface 11, the user interface will illuminate as shown in display state 330. Following a user contacting the light switch indicator 312 (shown as 325 a as in an initially unlit state in display state 322), a first bar of the light level bar display 315 will become ‘filled’ or ‘darkened’ indicative of the luminosity of the illumination source is at a lowest setting. Following a user contacting the illumination switch indicator 312 (shown as 325 b as in an initially lit state in display state 330), for a second time, the first bar of the light level bar display 315 will remain ‘filled’ or ‘darkened’, and a second, adjacent bar will become ‘filled’ or ‘darkened’ indicating the luminosity of the illumination source is at a medium speed setting, (not shown). Following a user contacting the switch indicator 312 for a third time, the first and second bar of the light level bar display 315 will remain ‘filled’ or ‘darkened’, and a third or adjacent bar will become ‘filled’ or ‘darkened’ indicative of the luminosity of the illumination source is at a high setting, (not shown). Skilled artisans will recognize the examples provided herein have many useful alternatives that fall within the scope of embodiments of the invention. For example, further illumination source 305 luminosity settings can be accommodated by increasing the number of bars on the bar-graph, or by the use of alternative display formats intended to be representative of the luminosity of the illumination source 305.

Some embodiments of the invention can comprise an alternative user interface 11 that can be used to control other features of a range hood. For example, referring now to FIGS. 4 a and 4 b showing range hood systems 400 and 420, the user interface can comprise a clock 401 comprising a 4-digit numeral display, and a timer switch indicator 460. Furthermore, in some other embodiments, other fan delay-off features can be implemented. In some further embodiments, if the user interface 11 in the area of the clock 401 is pressed and held for three seconds, a clock setting mode is activated, and the clock numerals will blink. In the clock setting mode, the light switch indicator button 312 is used to index the minutes, and the fan switch indicator button 310 is used to index the hours. Each press of the button 310 will index the time by 1 hour. In some other embodiments, if the button 310 is pressed and held, the hour setting will index 1 hour for every half second that the button is held. Each press of the button 312 will index the time by 1 minute. If the button 312 is pressed and held, the minutes will index at 1 minute every half second, after 3 seconds of holding, the setting will index 5 minutes every half second held. In some embodiments, if the user again presses the user interface 11 in the area of the clock 401, the time will be set, the numerals will stop blinking, and the clock setting will be exited. The user can leave the buttons 310 and 312 alone for 5 minutes, and the time will be set at the indicated setting, and the clock setting will be exited.

Some other embodiments of the invention include additional features. For example, if the fan is on (any speed setting), and the fan delay-off button indicator 317 is pressed, the delay off feature of a control system (not shown) will be activated. The clock 401 display will indicate the delay time 455, with a default time of five minutes, with the first two digits displaying “DL” to indicate the function is in the delay-off mode (e.g. shown as DL:10 in display state 412 in FIG. 4 a, and DL:05 as shown in FIG. 4 b, in display state 435). In some embodiments, the user can continue to press the fan delay-off button indicator 317 until the desired delay-off time is indicated in the delay time 455 display. In some embodiments, each button press increments the delay-off time by five minutes, with a maximum of 30 minutes. In some embodiments, after 30 minutes, the setting will start again at 5 minutes. In some embodiments, when the desired setting is reached, and the user does not press the fan delay-off button indicator 317 again, the current setting is fixed, but will disappear from the display area 455. The delay timer will then operate, but not be shown in the display area. In some further embodiments, when the delay-off feature is activated (by pressing the fan delay-off button indicator 317), the user interface 11 can display a representation of a analog style ‘minute hand’ on the delay off ‘clock icon’ represented on the fan delay-off button indicator 317. The ‘minute hand’ will animate (rotate) during the delay off count-down period. In some embodiments, after the set time has elapsed, the fan will turn off, and the fan and the minute hand will stop rotating. In some embodiments, the delay-off feature will not turn off the illumination source 305 or any feature other than the fan. Furthermore, in some embodiments, the delay-off feature can be turned off at any time during operation by pressing the fan delay-off button indicator 317 again when activated. The fan will remain on the current setting, and the delay-off clock icon on the fan delay-off button indicator 317 will stop rotating. If no other features are active, and the delay-off feature turns off the fan, the control system (not shown) will turn off after an additional 5-seconds and the clock will stay on.

Referring again to FIGS. 4 a and 4 b, some embodiments of the invention can include a clock. For example when the control system has deactivated the user interface, a clock can be displayed on the screen with no backlighting (display 402). Some embodiments can include a clock as a standard 12 hour clock with no am/pm indicator. If the clock area is pressed, the clock illumination will be turned on (as shown in the display 410). If the clock area is pressed again, it will again be turned off. The default is clock “on”. However, if the clock is turned off, the delay off and timer settings will still be illuminated in the clock area when activated. After the delay off or timer functions are deactivated, the clock will turn back off. In some embodiments, the delay-off feature will temporarily override the clock when the delay off time is being set, and the clock will return once the delay off time is selected. The timer will temporarily override the clock when the timer is active. The clock will return once the timer is deactivated.

In some additional embodiments of the invention, the range hood system 400 and 420 can include a timer functionality controlled by a timer switch indicator 460. In some embodiments, the timer switch indicator 460 can include an ‘hour-glass’ icon or image that can be animated. For example, referring to FIG. 4 a (the display state 416) and FIG. 4 b (the display 438), if the timer switch indicator 460 is pressed, a timer feature will be activated. The numbers in the clock 401 will indicate the timer setting in minutes, with a default of zero minutes, and the digits will blink. In some embodiments, when the timer feature is activated, the user can index the timer upwards utilizing the light switch indicator 312 button, and index the timer down using the fan switch indicator 310 button. Each time button 310 or 312 is pressed, the timer will be indexed by one minute. In some embodiments, if the buttons 310 or 312 are pressed and held, the time will be indexed by one minute for every half second the button is held. In some embodiments, after three seconds of holding, the timer will be indexed by five minutes for every half second held. When the desired setting is reached, the timer will be activated after five seconds of not being indexed. The maximum timer setting is 99 minutes, 59 seconds, (e.g. displayed as “99:59”). The timer numerals of the clock 401 will stop blinking, but the countdown will continue to show in the clock 401 until it is deactivated. The timer will show and countdown minutes and seconds.

In some further embodiments of the invention, when the timer feature described about is activated, an ‘hour-glass’ icon or image that can be animated on the timer switch indicator 460 (shown display state 416 in FIG. 4 a, and display state 438 in FIG. 4 b). In some embodiments, the ‘hour-glass’ will animate, and the ‘sand’ in the top of the hour glass will empty and fill in the bottom. In some embodiments, when all of the sand is in the bottom, the hourglass will flip and the sequence will start again. In some embodiments, after the set time has elapsed, an audible beep will be enunciated at one beep every two seconds. The ‘hour-glass’ animation will stop, and the clock 401 will show and flash “00:00”. In some embodiments, when the user presses the timer switch indicator 460 again, the clock will return, and the audible beep sequence will stop. The timer feature can be turned off at any time during operation by pressing the timer switch indicator 460 again when activated. The clock 401 will return to displaying the time, and the ‘hour-glass’ animation will stop. In some embodiments, if no other features are active, and the timer feature is ended, the control will turn off the set time displayed on the clock 401 after an additional five seconds.

As shown and described above and in FIGS. 1, 2 a-2 e, 3 a-3 f, and 4 a-4 b, some embodiments of the invention can be installed adjacent to a cooking area (e.g., in a kitchen). For example, in some embodiments, the range hood systems as described can be installed immediately adjacent to, or above a cook top or range top. During operation, especially when the range top features multiple cooking surfaces, or during multiple sequential or prolonged cooking episodes, the range hood may be exposed to high temperatures. The range hood outer surface and internal components may be heated by convection, IR-heat, and from steam, hot gases and cooking effluent, or may be operated in an environment with a high ambient temperature. In some embodiments of the invention, a heat monitoring system (not shown) can be included. For example, referring again to FIG. 4 a (the display state 414) and FIG. 4 b (the display state 437), one or more embodiments may feature a heat sentry mode (shown as an illuminated icon 415). In some embodiments, when a heat sensor (not shown) detects a high level of heat , (e.g. approx. 70° C. at the control board, or at a temperature recommended by the supplier), the heat sentry control system (not shown) will automatically turn the fan to its highest setting. The heat sentry mode 415 icon will illuminate, and a fan icon displayed on the fan switch indicator 310 will animate (rotate) at its highest speed. The heat sentry mode 415 will remain activated until temperatures are reduced by more than 10° C. at the control board (not shown). In some embodiments, when the heat sentry mode 415 is activated, the user cannot adjust the fan speed setting, and if the delay-off feature is activated, it will be temporarily interrupted until the heat sentry mode 415 is deactivated. After the heat sentry mode 415 is deactivated, the fan functions will return to the state they were prior to heat sentry activation, and the heat sentry mode 415 icon will disappear.

In some embodiments, when the fan (not shown), or other components such as an illumination source 305 are not operational, the user interface 11 will not be illuminated (shown as display state 402 in FIG. 4 a and display state 422 in FIG. 4 b). In some embodiments, the clock 401 will be visible to a user (as shown). After a user contacts one or more buttons or switches the user interface display can illuminate (shown as display state 410 in FIG. 4 a and display state 430 in FIG. 4 b). In some embodiments, if the user takes no further action, (i.e. the user makes no further contact of one or more buttons or switches on the user interface display within 5 seconds), the display reverts to an off display state (shown as display state 402 in FIG. 4 a and display state 422 in FIG. 4 b). In some other embodiments, when the fan is in use, the fan switch indicator 310 will show an illuminated animated fan icon (represented in display state 404 in FIG. 4 a and display state 424 in FIG. 4 b). In some other embodiments, when the illumination source 305 is active, the light switch indicator can display an illuminated icon, (e.g. shown as a filled light bulb in display state 406 in FIG. 4 a and display state 426 in FIG. 4 b).

In some embodiments of the invention, when any switch or button on the user interface 11 is contacted or pressed, a control system (not shown) will send a control signal to an audio system (now shown). In some embodiments, the audio system will create an audible sound when any switch or button on the user interface 11 is contacted or pressed. In some embodiments, the sound is the same, or substantially similar to a “click”. In some other embodiments, the sound is the same, or substantially similar to the sound emitted by other common hand-held devices (such as a cellular phone, a smart phone, a tablet or a PDA).

It will be appreciated by those skilled in the art that while the invention has been described above in connection with particular embodiments and examples, the invention is not necessarily so limited, and that numerous other embodiments, examples, uses, modifications and departures from the embodiments, examples and uses are intended to be encompassed by the invention. 

1. A range hood system comprising: a housing comprising a first surface and a second surface coupled to the first surface; wherein the housing substantially encloses a ventilation assembly including an inlet and at least one fan; at least one illumination source coupled to the housing; a ventilation outlet coupled to the housing and configured and arranged to provide fluid flow from the housing to a location outside of the housing; and a user interface coupled with the second surface wherein the user interface includes at least one switch indicator configured and arranged to be capable of controlling at least one function of the range hood system; and wherein the at least one switch indicator includes at least one light source capable of communicating information to a user using a visible light; and wherein the information communicated to a user further comprises light emitted from the at least one light source and includes light dispersed from at least one icon; and wherein the icon comprises a representation of at least one function of the range hood system capable of being controlled by the at least one switch indicator.
 2. The range hood system of claim 1 wherein the information communicated by the at least one switch indicator comprises light luminosity.
 3. The range hood system of claim 1 wherein the at least one switch indicator emits visible light using a light emitting diode.
 4. The range hood system of claim 1 wherein the at least one switch indicator emits visible light using an electroluminescent source.
 5. The range hood system of claim 1 wherein the user interface further comprises a liquid crystal display wherein the liquid crystal display comprises at least one bar-graph type display configured and arranged to display a fan status or an illumination source status.
 6. The range hood system of claim 1 wherein the user interface further comprises a clock.
 7. The range hood system of claim 6 wherein the clock further comprises a timer.
 8. The range hood system of claim 6 wherein the clock further comprises a fan delay-off timer.
 9. The range hood system of claim 2 wherein the information communicated by the at least one switch indicator is represented by a color of light.
 10. The range hood system of claim 2 wherein the information communicated by the at least one switch indicator is represented by a fluctuating luminosity.
 11. The range hood system of claim 1 wherein the housing further comprises at least one aperture coupled to the first surface of the housing.
 12. The range hood system of claim 1 wherein the housing further comprises a plurality of apertures coupled to the second surface of the housing.
 13. The range hood system of claim 2 wherein the icon is configured and arranged to animate.
 14. The range hood system of claim 2 wherein the information communicated to the user from at least one switch indicator includes a filter change notification.
 15. The range hood system of claim 2 wherein the information communicated to the user from at least one switch indicator includes fan operation.
 16. The range hood system of claim 2 wherein the information communicated to the user from at least one switch indicator includes illumination source status.
 17. The range hood system of claim 2 wherein the information communicated to the user from at least one switch indicator includes fan delay-off status.
 18. The range hood system of claim 2 wherein the information communicated to a user further comprises light dispersed at least partially from a periphery of the at least one switch indicator and at least partially encircling the icon.
 19. The range hood system of claim 2 wherein the range hood system further comprises an overlay fascia substantially coupled with the second surface; and wherein the overlay fascia is coupled with and at least partially covering the user interface.
 20. The range hood system of claim 19 wherein the overlay fascia comprises a polycarbonate polymer.
 21. A range hood system comprising: a housing comprising a first surface and a second surface coupled to the first surface; wherein the housing substantially encloses a ventilation assembly including at least one fan and at least one illumination source coupled to a third surface of the housing; a ventilation outlet coupled to the housing and configured and arranged to provide fluid flow from the housing to a location substantially outside of the housing; a plurality of apertures coupled to the second surface of the housing; a light emitting device coupled with the first surface of the housing, configured and arranged to communicate the status of at least one function of the range hood system wherein the status includes fan status and illumination status and filter change status; and a fan switch icon and a light switch icon coupled with a surface of the second surface; a fan switch coupled with the third surface of the housing; and a light switch coupled with the third surface of the housing. 